Quick Response from @sainsburys
I had shopped in Sainsbury's the week before, was given a £10 voucher, so thought I'd go back the following week and do my next lot of shopping (with a few store cupboard items to bring me up to the required £70 spend). I got to the til and was told that the voucher had expired the day before. Too tired to put anything back, I purchased, then tweeted my frustration that no one does…